The necessity of paper roll testing

The paper roll hardness, also known as the paper winding tightness, is an important indicator related to the cutting, packaging, printing, transportation, and downstream customer production line operation. At present, the majority of the domestic paper industry relies on sensory experience such as visual inspection and hand feel, which often leads to improper packaging methods, transportation damage, and even downstream customer production line disruptions and other adverse consequences

Theoretical basis for RQ8000 testing

The principle of RQ8000 testing is to strike the surface of a paper roll with a certain speed and force. The harder the paper roll, the faster the speed of the striking hammer decreases, that is, the greater the Deceleration deceleration value. Therefore, the surface hardness can be characterized in sequence. Qualified paper rolls need to have a good appearance, reasonable size, and stable hardness.
The reasonable hardness of a paper roll is generally higher the closer it is to the core. As shown in the following figure1) As shown; The ideal hardness of a paper roll is generally lower at the left and right ends of the banner than at the middle, as shown in Figure 2);

Figure 1) Relationship curve between paper roll hardness and paper roll diameter

Figure 2) Ideal hardness curve of the entire paper roll

Technical parameters of RQ8000 paper roll hardness tester

application

The RQ 8000 paper roll hardness tester can accurately measure the hardness of various paper rolls, providing quantitative numerical basis for setting and adjusting process parameters such as paper winding, slitting, and downstream printing and packaging. It has practical guidance significance and can effectively guide or adjust production processes such as slitting, packaging, transportation, and downstream printing, reducing the number of tourists
Household complaints.